Update azure-maps-authentication.md

Author: stevemunk

articles/azure-maps/azure-maps-authentication.md

@@ -21,7 +21,13 @@ Azure Maps supports two ways to authenticate requests: Shared Key authentication
 
 ## Shared Key authentication
 
- Primary and secondary keys are generated after the Azure Maps account is created. You're encouraged to use the primary key as the subscription key when calling Azure Maps with shared key authentication. Shared Key authentication passes a key generated by an Azure Maps account to an Azure Maps service. For each request to Azure Maps services, add the *subscription key* as a parameter to the URL. The secondary key can be used in scenarios like rolling key changes.  
+ Primary and secondary keys are generated after the Azure Maps account is created. You're encouraged to use the primary key as the subscription key when calling Azure Maps with shared key authentication. Shared Key authentication passes a key generated by an Azure Maps account to an Azure Maps service. For each request to Azure Maps services, add the *subscription key* as a parameter to the URL. The secondary key can be used in scenarios like rolling key changes.
+
+Example using the *subscription key* as a parameter in your URL:
+
+```http
+https://atlas.microsoft.com/mapData/upload?api-version=1.0&dataFormat=zip&subscription-key={Azure-Maps-Primary-Subscription-key}
+```  
 
 For information about viewing your keys in the Azure portal, see [Manage authentication](./how-to-manage-authentication.md#view-authentication-details).